code: def build_grand_child_experiment(space=None, trials=None):
      """Build a grand-child experiment by branching from `child` and generate trials."""
      if trials is None:
          trials = [None for i in range(5)]
  
      build_child_experiment(
          space=space, trials=trials, name="grand-child", parent="child"
      )
  
file_path: orion/src/orion/testing/evc.py
imports: import contextlib
  import copy
  from orion.client import build_experiment, get_experiment
  from orion.core.io.space_builder import DimensionBuilder
label_desc: Use image node_id 5 for calling a global function with example usage: build_grand_child_experiment(space, trials) without return types